Question

A steel rod, is 15 m long at temperature of 10˚F. Find its change in length...

A steel rod, is 15 m long at temperature of 10˚F. Find its change in length as the temperature changes from 10˚F to 45˚F.

12 mm

5.8 mm

0.33 mm

0.58 mm

3.3 mm

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Answer #1

the change in length is given by this formula when the the there change in the temperature. The alpha here is coefficient of linear expansion. And for steel it is °C. 10°F = -12.22°C and 45°F = 7.22°C

So = 3.49mm.

Hence only possibility could be of last option.  

*i have taken the standard value of Coefficient of linear expansion (alpha) for steel from internet . That's why there's little mismatch in numerical value of the Answer.

#Hi, if you are happy and find this useful please thumbs up. In case if you have any query regarding the solution please let me know in the comments section below. Thanks!!

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